Suspended Domain

Suspended Domain: "This account has been suspended.
Either the domain has been overused, or the reseller ran out of resources."

This is on our website right now and we have no idea how it got there. We have talked with our hosting site and they say that everything is good on their end. We have talked with our domain registrar and they said everything is okay on there end. I am getting no answers. Does anyone know what this means and how to fix it? HELP!

Marie